YS/T 252 consists of the following five parts under the general title Methods for chemical analysis of nickel matte:
YS/T 252.1 Methods for chemical analysis of nickel matte - Determination of nickel content - Dimethylglyoxime gravimetric method
YS/T 252.2 Methods for chemical analysis of nickel matte - Determination of iron content - Sulfosalicylic acid photometric method
YS/T 252.3 Methods for chemical analysis of nickel matte - Determination of cobalt content - Flame atomic absorption spectrometric method
YS/T 252.4 Methods for chemical analysis of nickel matte - Determination of cobalt content - Sodium thiosulphate titrimetric method
YS/T 252.5 Methods for chemical analysis of nickel matte - Determination of sulfur content - Combustion-neutralization titrimetric method
This is part 2 of Methods for chemical analysis of nickel matte.
Methods for chemical analysis of nickel matte - Determination of iron content - Sulfosalicylic acid photometric method
1 Scope
This part specifies a determination method for iron content in nickel matte.
This part applies to the determination of the iron content in nickel matte with a measuring range of 0.5%~7%.
2 Method summary
The sample is decomposed with hydrochloric acid and saturated nitric acid-potassium chlorate solution, in the pH1.5～pH3.0 hydrochloric acid medium, iron (III) and sulfosalicylic acid form a reddish-brown complex; measure the absorbance with a spectrophotometer at the wavelength of 545 nm, and calculate the iron content according to the standard curve method.
3 Reagents
3.1 Hydrochloric acid (ρ1.19 g/mL).
3.2 Hydrochloric acid (1+3).
3.3 Nitric acid (ρ1.42 g/mL).
3.4 Aqueous ammonia (1+3).
3.5 Nitric acid-potassium chlorate saturated solution: dissolve potassium chlorate in nitric acid (3.3) until saturated.
3.6 Sulfosalicylic acid solution (100 g/L): weigh 10 g of sulfosalicylic acid, dissolve it in water and dilute to 100 mL, and adjust the pH to about 2 with aqueous ammonia (3.4).
Foreword i 1 Scope 2 Method summary 3 Reagents 4 Apparatus 5 Analytical procedures 6 Calculation and expression of analysis results 7 Precision 8 Quality assurance and control
YS/T 252 consists of the following five parts under the general title Methods for chemical analysis of nickel matte:
YS/T 252.1 Methods for chemical analysis of nickel matte - Determination of nickel content - Dimethylglyoxime gravimetric method
YS/T 252.2 Methods for chemical analysis of nickel matte - Determination of iron content - Sulfosalicylic acid photometric method
YS/T 252.3 Methods for chemical analysis of nickel matte - Determination of cobalt content - Flame atomic absorption spectrometric method
YS/T 252.4 Methods for chemical analysis of nickel matte - Determination of cobalt content - Sodium thiosulphate titrimetric method
YS/T 252.5 Methods for chemical analysis of nickel matte - Determination of sulfur content - Combustion-neutralization titrimetric method
This is part 2 of Methods for chemical analysis of nickel matte.
Methods for chemical analysis of nickel matte - Determination of iron content - Sulfosalicylic acid photometric method
1 Scope
This part specifies a determination method for iron content in nickel matte.
This part applies to the determination of the iron content in nickel matte with a measuring range of 0.5%~7%.
2 Method summary
The sample is decomposed with hydrochloric acid and saturated nitric acid-potassium chlorate solution, in the pH1.5～pH3.0 hydrochloric acid medium, iron (III) and sulfosalicylic acid form a reddish-brown complex; measure the absorbance with a spectrophotometer at the wavelength of 545 nm, and calculate the iron content according to the standard curve method.
3 Reagents
3.1 Hydrochloric acid (ρ1.19 g/mL).
3.2 Hydrochloric acid (1+3).
3.3 Nitric acid (ρ1.42 g/mL).
3.4 Aqueous ammonia (1+3).
3.5 Nitric acid-potassium chlorate saturated solution: dissolve potassium chlorate in nitric acid (3.3) until saturated.
3.6 Sulfosalicylic acid solution (100 g/L): weigh 10 g of sulfosalicylic acid, dissolve it in water and dilute to 100 mL, and adjust the pH to about 2 with aqueous ammonia (3.4).
Contents of YS/T 252.2-2007
Foreword i
1 Scope
2 Method summary
3 Reagents
4 Apparatus
5 Analytical procedures
6 Calculation and expression of analysis results
7 Precision
8 Quality assurance and control
